Introduced in 1927, the Scarab gained quick acceptance when it came close to sweeping the 1928 U.S. National Air Races.
The U.S. military designation for the Warner Scarab was the R-420.

models

• Scarab: 125 hp (93 kW)

specifications

• Radial piston engine Seven cylinders
• Displacement: 422 cubic inches (6.9 litres)
• Bore x stroke: 4 1/4 x 4 1/4 inches

used by

• Davis D-1-W